condition mean min max ZT0-3 62.4 62.4 62.4 ZT4-7 87.3 87.3 87.3 ZT8-11 73.19999999999999 73.19999999999999 73.19999999999999 ZT12-15 94.6 94.6 94.6 ZT16-19 122.15 122.15 122.15 ZT20-23 108.94999999999999 108.94999999999999 108.94999999999999